Routing outgoing calls
173World class routing
8
DEFINITY ECS Release 8.2
Administrator’s Guide
555-233-506 Issue 1
April 2000
8
Routing outgoing calls

World class routing

Your system uses Automatic Alternate Routing (AAR) and Automa tic Route
Selection (ARS) to direct outgoing calls.
AAR routes calls within your company over your own private network.
ARS routes calls that go outside your company over public ne tworks. ARS
also routes calls to remote company locations if you do not have a private
network.
Automatic routing begins when a user dials a Feature Access Code (FAC)
followed by the number the user wants to call. The switch analyzes the digits
dialed, selects the route for the call, deletes and inserts digits if necessary, and
routes the call over the trunks you specify in your routing tables. ARS and AAR
can access the same trunk groups and share the same route patterns and other
routing information. ARS calls can be converted to AAR calls and vice-versa.
The FAC for AAR is usually the digit 8. The FAC for ARS is usually the digit 9 in
the US and 0 outside of the US. Your Lucent technician sets up AAR on your
switch and usually assigns the AAR FAC at the same time. You can administer
your own ARS FAC.
This section describes only ARS call routing.